Orðaskrá

quadric, n.

1. ferningsferill, annars stigs ferill
   = quadratic curve, quadric curve
2. annars stigs jafna, ferningsjafna
   = quadratic, quadratic equation
3. ferningsflötur, annars stigs flötur
   = quadric surface, surface of second order
4. annars stigs háflötur, ferningsháflötur
   = hyperquadric